Omega_ELS Posted yesterday at 08:33 AM Report Posted yesterday at 08:33 AM Hello everyone I recently bought a Stax SRD-7 with replaced transformers the essence of the problem is that the new transformers have a primary winding resistance of only 0.1 ohms (this is if we just measure it with a multimeter) - there are about 32 turns of thick wire, so their compatibility with amplifiers is very limited - amplifiers usually require at least 4 ohms. You will say that a simple solution to this is to simply add 4-8-16-32 ohm resistors in series with the primary winding. But. If i add at least 1 ohm - high frequencies begin to drop sharply, this is very audible in headphones. Is there any other way to put something instead of resistors so that this modified Stax SRD-7 can be safely connected to power amplifiers? I looked at solutions to this issue in KS M03, for example, there is a "maxim max97220a" for this - but this is a very cheap and poor sounding solution. I will be grateful for any ideas. The right decision would probably be to just throw out the Stax SRD-7 and buy a proper amp, but I want to give it a chance by using all the options. Quote
spritzer Posted yesterday at 11:43 AM Report Posted yesterday at 11:43 AM You are measuring DC resistance of the transformers and not AC inductance but it is still rather low for my liking. So I'd say the transformers installed as clearly not suitable for this role so I'd replace them with something that actually works. Quote
Omega_ELS Posted yesterday at 12:41 PM Author Report Posted yesterday at 12:41 PM 56 minutes ago, spritzer said: You are measuring DC resistance of the transformers and not AC inductance but it is still rather low for my liking. So I'd say the transformers installed as clearly not suitable for this role so I'd replace them with something that actually works. hi spritzer thanks for your reply looks like yes, the only option is to simply either replace the transformers with others or just get a "direct drive" es amplifier today I bought an old KGSS for a very good price, I think this will be my solution for now Quote
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